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dc.contributor.authorChen, Chien-Hungen_US
dc.contributor.authorWang, Chi-Chuanen_US
dc.date.accessioned2015-12-02T02:59:27Z-
dc.date.available2015-12-02T02:59:27Z-
dc.date.issued2015-11-01en_US
dc.identifier.issn0947-7411en_US
dc.identifier.urihttp://dx.doi.org/10.1007/s00231-015-1666-4en_US
dc.identifier.urihttp://hdl.handle.net/11536/128210-
dc.description.abstractThe present study proposed a novel step or trapezoid surface design applicable to air-cooled heat sink under cross flow condition. A total of five heat sinks were made and tested, and the corresponding fin patterns are (a) plate fin; (b) step fin (step 1/3, 3 steps); (c) 2-step fin (step 1/2, 2 steps); (d) trapezoid fin (trap 1/3, cutting 1/3 length from the rear end) and (e) trapezoid fin (trap 1/2, cutting 1/2 length from the rear end). The design is based on the heat transfer augmentation via (1) longer perimeter of entrance region and (2) larger effective temperature difference at the rear part of the heat sink. From the test results, it is found that either step or trapezoid design can provide a higher heat transfer conductance and a lower pressure drop at a specified frontal velocity. The effective conductance of trap 1/3 design exceeds that of plate surface by approximately 38 % at a frontal velocity of 5 m s(-1) while retains a lower pressure drop of 20 % with its surface area being reduced by 20.6 %. For comparisons exploiting the overall thermal resistance versus pumping power, the resultant thermal resistance of the proposed trapezoid design 1/3, still reveals a 10 % lower thermal resistance than the plate fin surface at a specified pumping power.en_US
dc.language.isoen_USen_US
dc.titleA novel trapezoid fin pattern applicable for air-cooled heat sinken_US
dc.typeArticleen_US
dc.identifier.doi10.1007/s00231-015-1666-4en_US
dc.identifier.journalHEAT AND MASS TRANSFERen_US
dc.citation.volume51en_US
dc.citation.issue11en_US
dc.citation.spage1631en_US
dc.citation.epage1637en_US
dc.contributor.department機械工程學系zh_TW
dc.contributor.departmentDepartment of Mechanical Engineeringen_US
dc.identifier.wosnumberWOS:000362582300011en_US
dc.citation.woscount0en_US
Appears in Collections:Articles